freerdp/winpr/libwinpr/comm/test/TestSetCommState.c

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2023-05-09 21:29:50 +00:00
/**
* WinPR: Windows Portable Runtime
* Serial Communication API
*
* Copyright 2014 Hewlett-Packard Development Company, L.P.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <sys/stat.h>
#include <winpr/comm.h>
#include <winpr/crt.h>
#include "../comm.h"
static void init_empty_dcb(DCB* pDcb)
{
ZeroMemory(pDcb, sizeof(DCB));
pDcb->DCBlength = sizeof(DCB);
pDcb->XonChar = 1;
pDcb->XoffChar = 2;
}
static BOOL test_fParity(HANDLE hComm)
{
DCB dcb;
BOOL result;
init_empty_dcb(&dcb);
result = GetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "GetCommState failure: 0x%08" PRIx32 "\n", GetLastError());
return FALSE;
}
/* test 1 */
dcb.fParity = TRUE;
result = SetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "SetCommState failure: 0x%08" PRIx32 "\n", GetLastError());
return FALSE;
}
init_empty_dcb(&dcb);
result = GetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "GetCommState failure: 0x%08" PRIx32 "\n", GetLastError());
return FALSE;
}
if (!dcb.fParity)
{
fprintf(stderr, "unexpected fParity: %" PRIu32 " instead of TRUE\n", dcb.fParity);
return FALSE;
}
/* test 2 */
dcb.fParity = FALSE;
result = SetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "SetCommState failure: 0x%08" PRIx32 "\n", GetLastError());
return FALSE;
}
init_empty_dcb(&dcb);
result = GetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "GetCommState failure: 0x%08" PRIx32 "\n", GetLastError());
return FALSE;
}
if (dcb.fParity)
{
fprintf(stderr, "unexpected fParity: %" PRIu32 " instead of FALSE\n", dcb.fParity);
return FALSE;
}
/* test 3 (redo test 1) */
dcb.fParity = TRUE;
result = SetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "SetCommState failure: 0x%08" PRIx32 "\n", GetLastError());
return FALSE;
}
init_empty_dcb(&dcb);
result = GetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "GetCommState failure: 0x%08" PRIx32 "\n", GetLastError());
return FALSE;
}
if (!dcb.fParity)
{
fprintf(stderr, "unexpected fParity: %" PRIu32 " instead of TRUE\n", dcb.fParity);
return FALSE;
}
return TRUE;
}
static BOOL test_SerialSys(HANDLE hComm)
{
DCB dcb;
BOOL result;
init_empty_dcb(&dcb);
result = GetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "GetCommState failure: 0x%x\n", GetLastError());
return FALSE;
}
/* Test 1 */
dcb.BaudRate = CBR_115200;
result = SetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "SetCommState failure: 0x%08x\n", GetLastError());
return FALSE;
}
init_empty_dcb(&dcb);
result = GetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "GetCommState failure: 0x%x\n", GetLastError());
return FALSE;
}
if (dcb.BaudRate != CBR_115200)
{
fprintf(stderr, "SetCommState failure: could not set BaudRate=%d (CBR_115200)\n",
CBR_115200);
return FALSE;
}
/* Test 2 using a defferent baud rate */
dcb.BaudRate = CBR_57600;
result = SetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "SetCommState failure: 0x%x\n", GetLastError());
return FALSE;
}
init_empty_dcb(&dcb);
result = GetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "GetCommState failure: 0x%x\n", GetLastError());
return FALSE;
}
if (dcb.BaudRate != CBR_57600)
{
fprintf(stderr, "SetCommState failure: could not set BaudRate=%d (CBR_57600)\n", CBR_57600);
return FALSE;
}
/* Test 3 using an unsupported baud rate on Linux */
dcb.BaudRate = CBR_128000;
result = SetCommState(hComm, &dcb);
if (result)
{
fprintf(stderr, "SetCommState failure: unexpected support of BaudRate=%d (CBR_128000)\n",
CBR_128000);
return FALSE;
}
return TRUE;
}
static BOOL test_SerCxSys(HANDLE hComm)
{
/* as of today there is no difference */
return test_SerialSys(hComm);
}
static BOOL test_SerCx2Sys(HANDLE hComm)
{
/* as of today there is no difference */
return test_SerialSys(hComm);
}
static BOOL test_generic(HANDLE hComm)
{
DCB dcb, dcb2;
BOOL result;
init_empty_dcb(&dcb);
result = GetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "GetCommState failure: 0x%x\n", GetLastError());
return FALSE;
}
/* Checks whether we get the same information before and after SetCommState */
memcpy(&dcb2, &dcb, sizeof(DCB));
result = SetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "SetCommState failure: 0x%08x\n", GetLastError());
return FALSE;
}
result = GetCommState(hComm, &dcb);
if (!result)
{
fprintf(stderr, "GetCommState failure: 0x%x\n", GetLastError());
return FALSE;
}
if (memcmp(&dcb, &dcb2, sizeof(DCB)) != 0)
{
fprintf(stderr,
"DCB is different after SetCommState() whereas it should have not changed\n");
return FALSE;
}
// TODO: a more complete and generic test using GetCommProperties()
/* TMP: TODO: fBinary tests */
/* fParity tests */
if (!test_fParity(hComm))
{
fprintf(stderr, "test_fParity failure\n");
return FALSE;
}
return TRUE;
}
int TestSetCommState(int argc, char* argv[])
{
struct stat statbuf;
BOOL result;
HANDLE hComm;
if (stat("/dev/ttyS0", &statbuf) < 0)
{
fprintf(stderr, "/dev/ttyS0 not available, making the test to succeed though\n");
return EXIT_SUCCESS;
}
result = DefineCommDevice("COM1", "/dev/ttyS0");
if (!result)
{
fprintf(stderr, "DefineCommDevice failure: 0x%x\n", GetLastError());
return EXIT_FAILURE;
}
hComm = CreateFile("COM1", GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
if (hComm == INVALID_HANDLE_VALUE)
{
fprintf(stderr, "CreateFileA failure: 0x%x\n", GetLastError());
return EXIT_FAILURE;
}
if (!test_generic(hComm))
{
fprintf(stderr, "test_generic failure (SerialDriverUnknown)\n");
return EXIT_FAILURE;
}
_comm_setServerSerialDriver(hComm, SerialDriverSerialSys);
if (!test_generic(hComm))
{
fprintf(stderr, "test_generic failure (SerialDriverSerialSys)\n");
return EXIT_FAILURE;
}
if (!test_SerialSys(hComm))
{
fprintf(stderr, "test_SerialSys failure\n");
return EXIT_FAILURE;
}
_comm_setServerSerialDriver(hComm, SerialDriverSerCxSys);
if (!test_generic(hComm))
{
fprintf(stderr, "test_generic failure (SerialDriverSerCxSys)\n");
return EXIT_FAILURE;
}
if (!test_SerCxSys(hComm))
{
fprintf(stderr, "test_SerCxSys failure\n");
return EXIT_FAILURE;
}
_comm_setServerSerialDriver(hComm, SerialDriverSerCx2Sys);
if (!test_generic(hComm))
{
fprintf(stderr, "test_generic failure (SerialDriverSerCx2Sys)\n");
return EXIT_FAILURE;
}
if (!test_SerCx2Sys(hComm))
{
fprintf(stderr, "test_SerCx2Sys failure\n");
return EXIT_FAILURE;
}
if (!CloseHandle(hComm))
{
fprintf(stderr, "CloseHandle failure, GetLastError()=%08x\n", GetLastError());
return EXIT_FAILURE;
}
return EXIT_SUCCESS;
}